Vampaneze
In The Saga of Darren Shan the Vampaneze are sworn enemies to the vampires, believing that there is honour in killing their victims and claiming their souls. They were vampires who broke away from the clan (600 years before the third book) and claimed themselves a new race (Vampaneze) because of the different customs they held. The Vampaneze are considered the antagonists, though they only appear that way due to the misleading image of Murlough (a mad Vampaneze), The Vampaneze Lord and the War of the Scars; Mr Crepsley himself noted that vampaneze had some positive traditions such as their refusal to lie and their sense of honour. The Vampaneze have purple skin and red hair, eyes, lips, and fingernails though it takes a couple of decades for this colouring to set in. This is a side effect due to drinking a lot of blood: they must kill when they drink blood. Many Vampaneze do not want to fight the vampires.
The Vampaneze are first mentioned in Tunnels of Blood and become a main part of the plot throughout the rest of the series. Examples of Vampeneze include Murlough and Gannen Harst.
Read more about this topic: The Saga Of Darren Shan